Recordings from LiveATC uploaded to YouTube capture the moment the tower urged the Citation crew to hurry up and clear the runway. Just a few seconds later, the tower directs WestJet to abandon the landing, saying, "WestJet 2101, I'm not sure why traffic has stopped. A go-around, while often jarring for passengers, is a standard safety procedure in aviation, often known as a missed approach or rejected landing. A few moments later, the controller adds, "I'm not sure what would possess you to turn around on an active runway. "Both flight crews and air traffic controllers are highly trained professionals who regularly perform and manage these procedures to maintain the highest level of safety in Canada's airspace.